| 1 | /* Copyright (C) 1991-2022 Free Software Foundation, Inc. |
|---|
| 2 | This file is part of the GNU C Library. |
|---|
| 3 | |
|---|
| 4 | The GNU C Library is free software; you can redistribute it and/or |
|---|
| 5 | modify it under the terms of the GNU Lesser General Public |
|---|
| 6 | License as published by the Free Software Foundation; either |
|---|
| 7 | version 2.1 of the License, or (at your option) any later version. |
|---|
| 8 | |
|---|
| 9 | The GNU C Library is distributed in the hope that it will be useful, |
|---|
| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
|---|
| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
|---|
| 12 | Lesser General Public License for more details. |
|---|
| 13 | |
|---|
| 14 | You should have received a copy of the GNU Lesser General Public |
|---|
| 15 | License along with the GNU C Library; if not, see |
|---|
| 16 | <https://www.gnu.org/licenses/>. */ |
|---|
| 17 | |
|---|
| 18 | #include <errno.h> |
|---|
| 19 | #include <signal.h> |
|---|
| 20 | |
|---|
| 21 | /* Set the handler for the signal SIG to HANDLER, |
|---|
| 22 | returning the old handler, or SIG_ERR on error. */ |
|---|
| 23 | __sighandler_t |
|---|
| 24 | __sysv_signal (int sig, __sighandler_t handler) |
|---|
| 25 | { |
|---|
| 26 | /* Check signal extents to protect __sigismember. */ |
|---|
| 27 | if (handler == SIG_ERR || sig < 1 || sig >= NSIG) |
|---|
| 28 | { |
|---|
| 29 | __set_errno (EINVAL); |
|---|
| 30 | return SIG_ERR; |
|---|
| 31 | } |
|---|
| 32 | |
|---|
| 33 | __set_errno (ENOSYS); |
|---|
| 34 | |
|---|
| 35 | return SIG_ERR; |
|---|
| 36 | } |
|---|
| 37 | weak_alias (__sysv_signal, sysv_signal) |
|---|
| 38 | |
|---|
| 39 | stub_warning (sysv_signal) |
|---|
| 40 | |
|---|
